oj.uz

Submission #842443

# Submission time Handle Problem Language Result Execution time Memory
842443 2023-09-02T21:54:54 Z Bula T-Covering (eJOI19_covering) C++14
100 / 100
 342 ms 72620 KB 
#include <bits/stdc++.h>
using namespace std;
 
#define ll long long
#define pb push_back
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define ff first
#define sc second
#define int ll
const int mod = 1e9 + 7, N = 1e6 + 1;
vector< vector<int> > x;
int n, m;
vector<int> v[N], vis(N), p;
set<int> st;
int cnt = 0, cnt1 = 0;
void dfs(int u){
    cnt++;
    vis[u] = 1;
    if(st.find(u) == st.end()){
        int a = u / m;
        if(u % m != 0) a++;
        int b = u % m;
        if(b == 0) b = m;
        p.pb(x[a][b]);
    }else{
        cnt1++;
    }
    for(auto to : v[u]){
        if(vis[to] == 0) dfs(to);
    }
}
 
main(){
    ios::sync_with_stdio(0);
    cin.tie(0),cout.tie(0);
    cin >> n >> m;
    x.resize(n + 1);
    for(int i = 1; i <= n; i++){
        x[i].resize(m + 1);
        for(int j = 1; j <= m; j++){
            cin >> x[i][j];
        }
    }
    int k;
    cin >> k;
    int ans = 0;
    for(int i = 1; i <= k; i++){
        int a, b;
        cin >> a >> b;
        a++;b++;
        ans += x[a][b];
        st.insert((a - 1) * m + b);
        vector< pair<int, int> > l = {{0, 1}, {0, -1}, {1, 0}, {-1, 0}};
        for(auto t : l){
            int a1 = a + t.ff;
            int b1 = b + t.sc;
            if(a1 < 1 || a1 > n || b1 < 1 || b1 > m) continue;
            v[(a - 1) * m + b].pb((a1 - 1) * m + b1);
            v[(a1 - 1) * m + b1].pb((a - 1) * m + b);       
        }
    }
    
    for(auto c : st){    
        if(vis[c] == 1) continue;
        dfs(c);
        if(cnt < cnt1 * 4){
            cout << "No" << endl;
            return 0;
        }
        sort(rall(p));
        for(int i = 0; i < cnt1 * 3; i++) ans += p[i];
        cnt = 0;
        cnt1 = 0;
        p.clear();
    }
    cout << ans << endl;
}

Compilation message

covering.cpp:34:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   34 | main(){
      | ^~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 31836 KB Output is correct
2 Correct 8 ms 31944 KB Output is correct
3 Correct 12 ms 32376 KB Output is correct
4 Correct 22 ms 34164 KB Output is correct
5 Correct 56 ms 39764 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 31832 KB Output is correct
2 Correct 10 ms 31836 KB Output is correct
3 Correct 12 ms 32348 KB Output is correct
4 Correct 24 ms 34296 KB Output is correct
5 Correct 57 ms 39648 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 31832 KB Output is correct
2 Correct 9 ms 31832 KB Output is correct
3 Correct 12 ms 32476 KB Output is correct
4 Correct 23 ms 34064 KB Output is correct
5 Correct 56 ms 39740 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 31832 KB Output is correct
2 Correct 7 ms 31580 KB Output is correct
3 Correct 10 ms 32092 KB Output is correct
4 Correct 10 ms 32088 KB Output is correct
5 Correct 13 ms 32536 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 31580 KB Output is correct
2 Correct 7 ms 31580 KB Output is correct
3 Correct 7 ms 31604 KB Output is correct
4 Correct 7 ms 31580 KB Output is correct
5 Correct 8 ms 31776 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 31836 KB Output is correct
2 Correct 8 ms 31944 KB Output is correct
3 Correct 12 ms 32376 KB Output is correct
4 Correct 22 ms 34164 KB Output is correct
5 Correct 56 ms 39764 KB Output is correct
6 Correct 8 ms 31832 KB Output is correct
7 Correct 10 ms 31836 KB Output is correct
8 Correct 12 ms 32348 KB Output is correct
9 Correct 24 ms 34296 KB Output is correct
10 Correct 57 ms 39648 KB Output is correct
11 Correct 7 ms 31832 KB Output is correct
12 Correct 9 ms 31832 KB Output is correct
13 Correct 12 ms 32476 KB Output is correct
14 Correct 23 ms 34064 KB Output is correct
15 Correct 56 ms 39740 KB Output is correct
16 Correct 7 ms 31832 KB Output is correct
17 Correct 7 ms 31580 KB Output is correct
18 Correct 10 ms 32092 KB Output is correct
19 Correct 10 ms 32088 KB Output is correct
20 Correct 13 ms 32536 KB Output is correct
21 Correct 7 ms 31836 KB Output is correct
22 Correct 8 ms 31884 KB Output is correct
23 Correct 14 ms 32604 KB Output is correct
24 Correct 23 ms 34204 KB Output is correct
25 Correct 56 ms 39760 KB Output is correct

Subtask #7
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 31836 KB Output is correct
2 Correct 8 ms 31944 KB Output is correct
3 Correct 12 ms 32376 KB Output is correct
4 Correct 22 ms 34164 KB Output is correct
5 Correct 56 ms 39764 KB Output is correct
6 Correct 8 ms 31832 KB Output is correct
7 Correct 10 ms 31836 KB Output is correct
8 Correct 12 ms 32348 KB Output is correct
9 Correct 24 ms 34296 KB Output is correct
10 Correct 57 ms 39648 KB Output is correct
11 Correct 7 ms 31832 KB Output is correct
12 Correct 9 ms 31832 KB Output is correct
13 Correct 12 ms 32476 KB Output is correct
14 Correct 23 ms 34064 KB Output is correct
15 Correct 56 ms 39740 KB Output is correct
16 Correct 7 ms 31832 KB Output is correct
17 Correct 7 ms 31580 KB Output is correct
18 Correct 10 ms 32092 KB Output is correct
19 Correct 10 ms 32088 KB Output is correct
20 Correct 13 ms 32536 KB Output is correct
21 Correct 7 ms 31580 KB Output is correct
22 Correct 7 ms 31580 KB Output is correct
23 Correct 7 ms 31604 KB Output is correct
24 Correct 7 ms 31580 KB Output is correct
25 Correct 8 ms 31776 KB Output is correct
26 Correct 7 ms 31836 KB Output is correct
27 Correct 8 ms 31884 KB Output is correct
28 Correct 14 ms 32604 KB Output is correct
29 Correct 23 ms 34204 KB Output is correct
30 Correct 56 ms 39760 KB Output is correct
31 Correct 342 ms 72620 KB Output is correct
32 Correct 66 ms 41108 KB Output is correct
33 Correct 72 ms 43204 KB Output is correct
34 Correct 61 ms 40748 KB Output is correct
35 Correct 177 ms 53956 KB Output is correct